Dieffenbachia
Dieffenbachia is a vegetable in the Araceae family. It grows best in part shade with medium moisture, and is listed for USDA zones 10-12.
Varieties
1 · sorted by days to maturity▸Dieffenbachia
PROPAGATION CATEGORY: Tropical houseplant (cuttings) (not in original seed catalog). Use: Bold variegated foliage; low-light tolerant. Note: Sap is toxic to pets and people (calcium oxalate) - hence "dumb cane".
Dieffenbachia (Dieffenbachia seguine), or dumb cane, is a tropical foliage plant with large cream-marbled leaves; easy but its sap is toxic, causing painful mouth swelling if chewed.
Growing notes: Botanical name: Dieffenbachia seguine|Hardiness zones: 10-12|Propagation: cutting|Light: Bright indirect light|Water: Medium|Mature size: 2-6 feet
Plan your dieffenbachia planting
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Start your free plan →Dieffenbachia care at a glance
Medium to bright indirect light; it tolerates lower light better than most broad-leaf tropicals but grows leggy there. Keep out of hot direct sun.
Water thoroughly when the top inch or two of mix has dried; dieffenbachia stems store some water and rot quickly in a constantly wet pot.
Average room humidity is fine; brown tips hint the air is very dry.
Keep above 60°F — cold damage starts below that.
Standard well-draining potting mix with added perlite.
Balanced fertilizer monthly during spring and summer.
In winter: Roughly halve the frequency in winter — cool, dim rooms dry out slowly.
Its old name is 'dumb cane' for a reason: calcium oxalate sap numbs and swells the mouth and throat of anything that chews it. Keep away from pets and toddlers; wear gloves to prune.
Pet listing per the ASPCA Toxic and Non-Toxic Plants database.
How to propagate dieffenbachia
Stem cuttings
- Wearing gloves, cut a stem section with at least two nodes (the sap is the toxic part).
- Let cut ends dry for a day.
- Root upright in water or lay the cane horizontally, half-buried in moist mix.
- New shoots sprout from the nodes in 4–8 weeks; pot up when roots are a few inches long.
Common dieffenbachia problems
Why are my dieffenbachia's lower leaves turning yellow?
Likely cause: One or two aging lower leaves is normal; several at once usually means overwatering.
Fix: Let the top couple of inches dry before watering again and confirm the pot drains freely; remove yellowed leaves at the stem.
Why is my dieffenbachia leggy with a bare stem?
Likely cause: Low light stretches the cane and old leaves shed from the bottom.
Fix: Move to brighter indirect light and cut the cane back hard in spring — it re-sprouts below the cut, and the top makes a new cutting.
Why are my dieffenbachia's leaf tips brown?
Likely cause: Dry air, salt buildup from fertilizer, or inconsistent watering.
Fix: Flush the pot with plain water, keep watering steady, and raise humidity a touch; trim tips cleanly.
Care profile compiled from extension and horticultural society guidance and the ASPCA toxic-plants list. Conditions vary by home — treat ranges as starting points.
At a glance
Storing & preserving
Most keep best refrigerated; storage crops prefer a cool, dry spot.
- Freeze: Blanch briefly, cool, then freeze — keeps color and texture.
- Can: Pressure-can low-acid vegetables; water-bath only pickled/acidified ones.
General home-preservation guidance — for tested processing times and safety, follow the National Center for Home Food Preservation.
Growing timeline
Care & troubleshooting
No curated care & troubleshooting advice for dieffenbachia yet. Our extension-sourced library currently focuses on common edible crops; we're expanding it over time.